/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.camunda.bpm.engine.impl.cmd;

import java.io.Serializable;
import java.util.List;
import org.camunda.bpm.engine.impl.context.Context;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.impl.persistence.entity.ProcessDefinitionEntity;
import org.camunda.bpm.engine.task.IdentityLink;

import static org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull;


/**
 * @author Tijs Rademakers
 */
public class GetIdentityLinksForProcessDefinitionCmd implements Command<List<IdentityLink>>, Serializable {
  
  private static final long serialVersionUID = 1L;
  protected String processDefinitionId;

  public GetIdentityLinksForProcessDefinitionCmd(String processDefinitionId) {
    this.processDefinitionId = processDefinitionId;
  }
  
  @SuppressWarnings({"unchecked", "rawtypes"})
  public List<IdentityLink> execute(CommandContext commandContext) {
    ProcessDefinitionEntity processDefinition = Context
      .getCommandContext()
      .getProcessDefinitionManager()
      .findLatestProcessDefinitionById(processDefinitionId);

    ensureNotNull("Cannot find process definition with id " + processDefinitionId, "processDefinition", processDefinition);

    List<IdentityLink> identityLinks = (List) processDefinition.getIdentityLinks();
    return identityLinks;
  }
  
}
